---
title: "onto-coresel-source — Mova code model"
description: "Mova code model of onto/src/coresel.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/onto/src/coresel.rs.groupant/source.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

This page as HTML: <https://groupants.elamur.ai/free/en/mova/onto/src/coresel.rs.groupant/source.groupant/>

# onto-coresel-source

The groupant beside onto/src/coresel.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.

## Facts

- **kind:** groupant_fragment
- **status:** partial source bound model
- **source:** [`onto/src/coresel.rs`](https://github.com/ElamurAI/mova-free/blob/main/onto/src/coresel.rs)
- **source SHA-256:** `eba8bb318c0d5b43…`
- **covers:** Scan boundary Q/P tokens and cast integer widths; match rank substrings by fixed priority; parse steps from first ' steps)' and last opening parenthesis. (bytes 1882–2838)
- **part of:** [onto-coresel](https://md.groupants.elamur.ai/free/en/mova/onto/src/coresel.rs.groupant/)
- **repository folder:** [`onto/src/coresel.rs.groupant/source.groupant`](https://github.com/ElamurAI/mova-free/tree/main/onto/src/coresel.rs.groupant/source.groupant)
- **repository commit:** `855da7bd4a7b`

> **Implementation material.** A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.

## Components

| component | label | where |
|---|---|---|
| **approximant** | partial | [approximant](#approximant) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | partial | [Cost](#cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | `model.md` |
| **tests** | executed bounded checks | [tests](#tests) |

## Obernants

The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.

| id | type | label | where |
|---|---|---|---|
| `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `token_boundary` | token_boundary | partial source derived model | [token_boundary](#token-boundary) |
| `rank_priority` | rank_priority | partial source derived model | [rank_priority](#rank-priority) |
| `step_grammar` | step_grammar | partial source derived model | [step_grammar](#step-grammar) |
| `width_loss` | width_loss | partial source derived model | [width_loss](#width-loss) |

## Model text


### descriptant

#### onto-coresel-source

Scan boundary Q/P tokens and cast integer widths; match rank substrings by fixed priority; parse steps from first ' steps)' and last opening parenthesis.

##### Epoch 2026-10-31

Prospective review preceded inline test edits. Tests used bounded synthetic CPU fixtures only. Scope bytes [1882,2838) in the parent source. Embedded xQ12 cannot become Q12. Missing source returns zeros/dash; narrowing overflow not rejected.

No production optimization, live teacher, corpus, assessment or database mutation. Registry presence denotes partial modeling; syntax is lexical and generated twice identically.

### approximant

#### Forward model: onto-coresel-source

Scan boundary Q/P tokens and cast integer widths; match rank substrings by fixed priority; parse steps from first ' steps)' and last opening parenthesis.

##### Domain

Finite input arrays/text with resource availability and the source-specific bounds and representation assumptions in [invariant.md](https://md.groupants.elamur.ai/free/en/mova/onto/src/coresel.rs.groupant/source.groupant/#invariant). Exact categorical semantics; no executable percent surrogate is supplied. 1/2/5/10% caps need a meaningful metric and are not claimed.

##### Relations

q=first_boundary_Q_u64 mod2^32; p=first_boundary_P_u64 mod2^16; absent/unparseable→0. rank=first matching member of ordered[preferred,normal,deprecated], else '-'. steps=parse_u8(parenthesized text before first ' steps)') or0.

### invariant

## Invariant and cost

Scope bytes [1882,2838) in the parent source. Embedded xQ12 cannot become Q12. Missing source returns zeros/dash; narrowing overflow not rejected.

### Cost

Linear traversed scope input/returned bytes except lookup logarithmic comparisons; allocations follow actual result buffers. Parent whole-pipeline cost is not assigned to this fragment.

No allocation, integer-overflow, malformed public-state or external-effect guarantee beyond explicitly described branches.

### composition

#### Composition

Scope output feeds its parent: wdwalk::read_core and corevmm::{candidates,verdicts,key_of} feed selection; q_synsets aligns accepted/also nouns; output consumed by coregate/build script. Helpers tested; full selection file pipeline not executed.

Child fragments specialize concrete byte scopes and share the parent syntax projection; they do not duplicate whole-file guarantees. No composition-wide approximation error budget is established.

### models

## Typed obernant catalog

Partial source-derived relations, not proofs. Complement excludes incompatible observations; reverse describes compatible antecedents.

### behavior_complement

Embedded xQ12 cannot become Q12. Missing source returns zeros/dash; narrowing overflow not rejected.

### reverse_reconstruction

Zeros admit absent/invalid tokens or exact narrowing modulus; nonzero tuples admit arbitrary ignored words.

### token_boundary

Unicode alphanumeric predecessor rejects token, punctuation permits.

### rank_priority

preferred wins over normal regardless textual order.

### step_grammar

Steps parse u8 or default0, including malformed/overflow.

### width_loss

P70000 becomes4464; Q narrowing similarly modulo2^32.

### tests

#### Evidence, 2026-10-31

Selected command: cargo test --offline --locked -p onto --bin onto -- --exact --test-threads=1 coresel::wave29::applicability_and_provenance

Named outcomes:

- coresel::wave29::applicability_and_provenance

Two debug and two release/optimized executions returned zero and identical sorted nonempty named outcomes. Source-generated syntax pairs matched byte-for-byte. 1 compiled source mutation rejected by named test, exact source restored and positive rerun succeeded.

- Control: "\"magical\" => field == \"risk\" -> \"magical\" => field != \"risk\"" → "coresel::wave29::applicability_and_provenance" (exit 101).

Finite synthetic examples only. Full ingestion, live workers, real corpus, allocation/I/O fault injection, GPU and full-school behavior remain unexecuted. No universal or executable-approximant assurance. External receipts: octopus-wave29-ontocore-2026-10-31 (native-commands.json, source-test-map.json, outcomes.json, controls.json and numeric exit/log files).